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AI startup urges optimism from Europe despite safety fears
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Italy winemakers hail bumper harvest but cut output
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'Godlike, invincible': Japan hails 11-year-old Games history-maker
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Kyiv shoppers feel the pinch from Russian strikes
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Nepal's hydropower ambitions face climate reality check
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Japanese anime actor fights TikTok over AI voice cloning
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Power cuts, rubble: millions come home to find Sudan's capital unlivable
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Curtain falls on the romance of India's single-screen cinemas
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Internationals keep Presidents Cup lead with late fightbacks
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Smells like teen spirit as US thrash Peru 4-1
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Tuchel to 'keep pushing' England to reach Spain's level
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Cavy chaos: Hundreds attend New Zealand's biggest guinea pig show
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Alcaraz saves match points to keep Europe ahead in Laver Cup
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Venezuela releases more political prisoners after opposition talks
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Spain success driven by hunger to improve, says De La Fuente
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England's best 'for a long time' despite Spain defeat, says Kane
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Lyon collapse at Stade Francais to suffer first Top 14 loss
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Powerful storm pummels northeast US with rain, high winds
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Oyarzabal and Spain sink England again as Modric shines for Croatia
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Filmmaker Mike Leigh wins top prize at Spain festival with 'last film'
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Housing protesters camp in central Madrid after mass demonstration
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Spain beat England in Nations League to extend unbeaten run
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Louise Trotter expands her palette at Bottega Veneta
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Ireland squad vote to play Israel tie despite Gaza unease
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Pope prays at Lourdes after huge Paris mass
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Gutsy Vollering wins cycling road race world title
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USA trims International lead after Presidents Cup four-balls
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Vollering wins cycling road race world title
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Russia accuses Europe of blocking Ukraine talks, as strikes drag on
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Man City's meteoric rise clouded by dark shadow
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'He said hello': Families pray with pope on Paris avenue
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Mbappe out for two weeks or more with knee injury say Real
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Pope celebrates giant Paris mass, flies to Lourdes
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Lyon collapse away to Stade and suffer first Top 14 loss
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Thousands march in Madrid over eviction of 87-year-old woman
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Russia accuses Europe of seeking to thwart Ukraine talks
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England women back to winning ways with last-gasp defeat of New Zealand
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Man City chairman defiant over reported Premier League charges
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Trump rejects Iran proposal for deal to reopen Hormuz
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Germany ready to 'walk through fire' for Klopp, says Tah
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England's Cox says injured Buttler leaves 'big shoes to fill'
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At least 16 killed in Russian and Ukrainian strikes
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Ruthless Perpignan upset sloppy Bordeaux-Begles
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Powerful storm pummels US Northeast
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Deadly abbey attack feeds anti-Ukrainian sentiment in Poland
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Bangkok declares disaster after homes flooded, roads submerged by heavy rain
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Antonelli says he drove 'safety-first' on his worst weekend of season
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Norris calls for errant Colapinto to be banned for causing Baku crash
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Fernandez fights back to reach Singapore Open final
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Russell finds himself again and prepares to heap pressure on Antonelli
Tokyo, Taipei lead tech losses as Asian markets suffer again
Tokyo and Taipei led losses on a glum day for Asian markets Friday, with tech firms once again in the crosshairs as investors cash in following this year's breathtaking rally.
The AI boom has sent technology valuations soaring to record levels as traders looked to get a slice of the next big thing while firms splashed out enormous amounts of money in investment.
But questions have been raised in recent months about whether valuations have gone too far and when companies will actually see any returns.
Worries about the AI trade have hammered the value of chip firms, with the Philadelphia Semiconductor Index losing about 19 percent from a June peak, according to Bloomberg.
Asian markets have been hammered, with Seoul's Kospi bearing the brunt of the selling, having more than doubled in the first six months of the year before losing about a third of its value since hitting a record in June.
But with South Korea enjoying a holiday on Friday, Tokyo and Taipei -- which are also heavily weighted toward tech -- were at the forefront of the selling.
Japan's Nikkei sank as much as four percent with Advantest and tech investment titan SoftBank losing around nine percent.
Chipmaker Kioxia collapsed 16 percent, meaning it has lost more than half its value since hitting a record high and becoming the country's biggest firm by market capitalisation last month.
Taiwan's Taiex also shed four percent as chipmaker TSMC retreated more than three percent a day after announcing record second-quarter profit and that it would invest a further $100 billion in the US state of Arizona.
There were also losses in Hong Kong, Shanghai, Singapore and Sydney.
"It looks like the rally in artificial intelligence-related stocks appears to be losing some momentum after months of almost uninterrupted gains," said Fawad Razaqzada, a market analyst at Forex.com.
"Given the pace of the prior advance, some consolidation was always likely. But there are some investors who are increasingly questioning whether the enormous sums being committed to AI infrastructure can generate sufficient returns within a reasonable timeframe."
However, he added that the selling "could simply reflect a period of portfolio rotation".
"Some investors may prefer to lock in profits from richly valued semiconductor names and reallocate capital towards sectors offering more attractive valuations and steadier earnings visibility," he wrote.
The dour mood in Asia followed losses in New York, where sharp falls in Nvidia and Amazon helped drag the Nasdaq down more than one percent.
And Netflix plunged more than nine percent in after-hours trade as it warned of a second quarter of slowing sales growth.
"The AI trade keeps learning the same lesson the hard way: when a stock goes vertical, it does not need bad news to come down. It just needs buyers to stop paying any price," said SPI Asset Management's Stephen Innes.
Oil prices jumped one percent as the US and Iran continued to exchange strikes in a flare-up that has seen traffic through the key Strait of Hormuz fall back to a trickle.
The renewed hostilities have fanned fears of a return to war that could send crude prices back higher, putting fresh pressure on inflation and eventually forcing central banks to hike interest rates.
- Key figures around 0210 GMT -
Tokyo - Nikkei 225: DOWN 4.0 percent at 64,171.46
Hong Kong - Hang Seng Index: DOWN 1.0 percent at 24,771.53
Shanghai - Composite: DOWN 0.8 percent at 3,853.18
West Texas Intermediate: UP 1.0 percent at $79.70 a barrel
Brent North Sea Crude: UP 1.0 percent at $85.06 a barrel
Euro/dollar: UP at $1.1446 from $1.1436 on Thursday
Pound/dollar: UP at $1.3477 from $1.3468
Dollar/yen: UP at 162.44 yen from 162.42 yen
Euro/pound: UP at 84.93 pence from 84.91 pence
New York - Dow: DOWN 0.2 percent at 52,552.97 (close)
London - FTSE 100: UP 0.5 percent at 10,572.24 (close)
A.Clark--AT